Method of stamping bookbindings and the like



July 3, 1923| S. SATENSTEIN METHOD OF STAMPING BOOKBINDINGS AND THE LIKEFiled March 29. 1922 vwwntoz Sam Patented July 3, 1923.

UNETED STATES PATENT OFFICE..

SIDNEY SATENSTEIN, F NEW YORK, N. Y., ASSIGNDR TO ALCHEMIC GOLD COMPANY.

INC., CORPORATIUN 0F NEW YORK.

lE-THOD OF STAMPING BOOKBINDINGS AND THE LIKE.

Application led March 29, 1922.

do hereby declare the following to be a full,

clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame. t

This inventionrelates to the priutingvor stamping of book-bindings,labels, hat bands, and Vgenerally to the application of impressions to.any surface. The invention is. 4 articularly adaptable. to the titiingand ration of bindings, although it is notlimited to such use, and it ismy intention to claim the method as described for all uses vfor which itmay be employed. y A

In the preparation of bindings and the like, it has been customaryheretofore to size and sometimes to oil the surface to which metallicleaf is applied and to imp-rem the leaf by means of relief dies underrelatively high pressure. Such applicationiinvolves a numberVA of`separate operations. The leaf is first caused to adhere to 'thesurf`face so that it covers entirelythe Spedi' in which the title ordecoration is tojappear. The surface' is passed through the -press Wherethe leaf is. subjected `to -pressureby the die. The Surface must thenbelbriished to' remove the surplusleaf, and if this is of value, asfwhen gold leaf-isused, the fineparticles must bel recovered. Because ofthe cost of the leaf, .the unavoidable. Waste and the complicatedoperations involvcd,the application of titles anddecorations to bindings and the like in the manner described is relatively expensive. i

It is the object of the present invention to provide a method ofapplying titles and decorations to bindings and the like, using metallicpigment inks asithe medium of application and thus avoiding theseveralopera tions and the Waste incident to the use ol metallic leaf. Y

Further objects and advantages of the in vention will be apparent as itis better understood by reference to the following speci hcation inwhich the prefcrreil embodiment of the invention is described Serial No.547,715.

C I have discovered that metallic pigment inks may be successfullyemployed in stampv ing book-bindings and the like provided the plate dieor type employed in the stamping operation is heated to and maintainedat e suitable temperature during the printing f or stamping operation.By applying hear, .to the printing plate in this manner the inkislcaused to dry rapidly so that a clean impression is obtained vriiiciidoes not become blurred either in the print ing or stamping operation orsubsequentlv in the handling of the bindings. Forv thermore, the rapiddrying of the ink insures a'smooth, hard and glossy finish on thepigment, which brings out the colorand niaterially adds to thedecorative quality of the product. The use of heat also obviates thenecessity of preliminary blanking impressions in the treatment of clothand leather having a distinct pattern or grain.

In carrying out the inventioni it is desire. ble to utilize an ink whichis capable of drying without becoming gurnmy and of :1. consistency suchas vto permit transference ci the ink through the printing rolls to theprinting plate. It is desirable. moreover, that the vehicle employed inthe ink be such as to protect the pigment from oxidation ang'colnseiuentliscoloration. Such an ini: is isc ose in t e copending a lication ofHoward Waters Doughty, Seriailgillo. 521,169, and consists, inaccordance with the disclosure in that application, of a metallic pigvmentsuspended in a vehicle which comprises a resinous substance and ahigh boiling hy drocar-bon derivative as a solvent for the resinoussubstance. In' its preferred embodiment, the vehicle consists ofordinary7 rosin dissolved irr terpineol or a solvent cori tainingterpineol in the proportion of seven partsby weight of terpineol to tiroparts of ordinary rosin. The proportions ol the ingredieiits of thesolvent may vary Widely as may also the particular ingredients'employed. The metallic pigment, which muv be. for exemple, a bronzepowder in Fineiv divided Condition, is mixed wiiii ih@ vehicle inproportions to produce an ink of the desired consistency, for example,in equal pro portions by weight or in the proportion of two parts byweight of the pigment to one part by weight of the vehicle. Theseproportions may also very depending upon the ico ` this may beparticular characteristics of the vehicle and Ypigment egployed. Noclaim is made beromtothe' orvehicle,thisbeingthesub ject matter of theeopending application referred to, and it is to be understood, moreover,that the present invention is not limited to theuseofthespecilicinkmentithis being me' y by way of illustration the referred embodiment of theinvention.

IEave discovered thatthe bestresultaare obtained when the ink abovedescribed is transferred to the binding or other surface by a printingplate which 1s preferably heated to a temperature sullcient to dry theink during the impreion ntervaL A. temper ature of approximately F. issatisfactory with the particular ink described. The temperature of theplate may vary considerably, depending upon the com -tion of the ink,without materially affecting the results obtained. It is referablymaintained at a substantiall uni orm temperature, and y accomplished bythe use of electric heating elements arranged behind the plate inheat-transmitting relation thereto.

In carryling out the invention a printing press of t e ordinary swinplaten type or an upright stamping or em ing presa with an inkingattachment may be employed. The heated printin or stamp' late die ortype is supporte on the bed o t e press, and the heating elementstherein are connected to a source of electric current where b thedesired temperature is maintained.

he ink is preferabl ap lied by inking ro1lers which are not a ec by theheat. Rollers of vulcanized oil or rubber are satisfactory for thisurpose. The rollers are fed from a suit le fountain plate or rollrgixilated to supply ink as required to the i ng rolls. The inking rollstravel over the printing or stamping plate between each impressionapplying ink thereto. The ink is immediate y transferred to the bindingwhich is disposed b the operator upon the swinging platen. gecause ofthe temperature of the plate, the ink is substantially dry before thepressure is released. The operation involved is thus quite as simple asany ordinary printing operation, the titles and decorations beingcomplete when the surface is withdrawn from the press by the operatorfollowing the impression. 0f course, the bindings may remain in thepress for one or more impressions as desired, but in ordinary work it issufficient to apply a single impression.

In order that the invention may be clearly understood, I have shown inthe accom* panying drawing the means whereb it may be carried out, itbeing understood, owever, that the invention is not limited to theparticular apparatus disclosed, nor, in fact, to

wing FigJiIItrateSiu-vu-ticaletionapnting press suitableforeinstampingbook bindmgv;

Ftilg2isaplanviewpartiallyiu of printing plate and heating meanstherefor;

Fig.3isaneulargedsedionalviewonthe line 3-3 of Fig. 2; and

Fig.4isareducedctonalviewonthe line 4-4 of Fig. 2.

Referring to the drawing, 1 indicates the frameofthepresswhichisrovidedwith a bed 2 to receive the h plate 3. latter comprises a base 4to which a printing latemaybesecureiandcoverplated eating elements 7 aresu ported within the base'iandareeonuected conduetorsto a source ofcurrent. The heating elemente may be of any suitable construction,consisting, for exam le, of 9, preferably of mica, upon w ch resistanceconductora 10 are wound. The Yresistance conductora areinsulatedfromthebase4andcover5by insulators, such as sheets of mica 11.Other forms of heating elements may be used. The presa is provided witha fountain roller 12 to which the ink may be applied, aud iuking rollers13 travel as is usual in printing presses between the fountain rollerand the printing plate, thus serving to transfer the ink after eachimpression to the printing plate.

A swinging platen 14, adapted to be actuated inr the usual manner, isprovided, and the binding or other surface 15 to be stamped is placedupon the platen as the latter swings downwardly. The bin is then carriedupwardly mto contact with the prin p ate to receive the impression,after whi the platen returns and the binding in removed by the operator.

From the foregoing, it will be understood that I have devised a novelmethod of stam ing surfas such as book-bindings, labo hat-bands and thelike. By the application of this method the tedious process of stampininvolvilg the use of metallic leaf is entire y avoid the time requiredto complete the stamping is materially reduced and waste of materiawhich is unavoidable in the use of metallic leaf, is eliminated. Theinvention is particularly adapted to the preparation of bindings inlarge editions where frequently the cost of binding mustA be reduced toa minimum. Bin pmpared in accordance with the invention closely resemblethose repared by the application of metal lea?, and, in fact, can hardlybe if the pigment employed in the ink is in a sufliclently finelydivided condition,

Various changes may be made in the de- The 1,4eo,ae1

teile of the operation without de nrhng' from the invention or smrieinganylgof the adantgges thereof.

Amethbaofmm whichm rises transferring s metslilgyigment inkpool!-tsining n. Asolvent which 1s not volatile at ltmospheric tem surfaceduring plicetlon of sucient heat to ensure vols.- tilizntion of thesolvent.

In testimony whereof I ax m perltures resum to a r and drying the o: thesurfaoe the impression interval by the aplo si ature.

SIDNEY SATE S IN.

